WDG-IV Series Analyzers

The WDG-IV analyzers measure oxygen, combustibles and methane in natural gas-fired applications. They are ideal for gas-fired power boilers or for boilers using natural gas during start-up and shutdown. With these analyzers, you can monitor oxygen and combustibles for maximum fuel efficiency.

Available with Series 2000 controller. This analyzer has a close-coupled extractive design for fast response in a wide range of flue gas applications up to 3000°F (1648°C).

Features

Weatherproof, stainless steel sensor enclosure

Zirconium oxide oxygen cell

Catalytic Combustibles detector for 0-2000 ppm

Catalytic Methane detector for 0-5%

Class I, Div. 2 or Class I, Div. 1 option

Two isolated current outputs

Four alarms

Diagnostics

RS-485

HART option available

UL Listed

Specifications
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WDG-IV Series Combustion Analyzers

Principle of Operation (O2)

Zirconium oxide for net oxygen measurement and dual catalytic detectors for both combustibles and methane.

Output Range (O2)

Oxygen: From 0-1 to 0-100%

Accuracy (O2)

±0.75% of measured value or ±0.05%, whichever is greater
Combustibles: ±2% of full scale output range

Response

Oxygen: 90% of a step change < 30 seconds

Aspirator Air Requirements

10-20 SCFH (4.7 to 9.4 L/min) Typical at 15 to 100 psig

Analog Output

Two isolated linear current outputs for O2, combustibles and hydrocarbon. Each output can be 4-20 mA, 0-20 mA, 20-4 mA or 20-0 mA and is fully scalable. NAMUR Configurable. Hold or track during calibration. Max. load 1200 Ω

Alarms

Two independent oxygen alarms each high or low selectable
Set relays to energize or de-energize on alarm